/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*
* Authors:
* Damon Chaplin <damon@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "e-timezone-dialog.h"
#include <time.h>
#include <string.h>
#include <glib/gi18n.h>
#include <libecal/libecal.h>
#include "e-map.h"
#include "e-misc-utils.h"
#include "e-util-private.h"
#ifdef G_OS_WIN32
#ifdef gmtime_r
#undef gmtime_r
#endif
#ifdef localtime_r
#undef localtime_r
#endif
/* The gmtime() and localtime() in Microsoft's C library are MT-safe */
#define gmtime_r(tp,tmp) (gmtime(tp)?(*(tmp)=*gmtime(tp),(tmp)):0)
#define localtime_r(tp,tmp) (localtime(tp)?(*(tmp)=*localtime(tp),(tmp)):0)
#endif
#define E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA 0xc070a0ff
#define E_TIMEZONE_DIALOG_MAP_POINT_HOVER_RGBA 0xffff60ff
#define E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_1_RGBA 0xff60e0ff
#define E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_2_RGBA 0x000000ff
#define E_TIMEZONE_DIALOG_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_TIMEZONE_DIALOG, ETimezoneDialogPrivate))
struct _ETimezoneDialogPrivate {
/* The selected timezone. May be NULL for a 'local time' (i.e. when
* the displayed name is ""). */
icaltimezone *zone;
GtkBuilder *builder;
EMapPoint *point_selected;
EMapPoint *point_hover;
EMap *map;
/* The timeout used to flash the nearest point. */
guint timeout_id;
/* Widgets from the UI file */
GtkWidget *app;
GtkWidget *table;
GtkWidget *map_window;
GtkWidget *timezone_combo;
GtkWidget *preview_label;
};
static void e_timezone_dialog_dispose (GObject *object);
static gboolean get_widgets (ETimezoneDialog *etd);
static gboolean on_map_timeout (gpointer data);
static gboolean on_map_motion (GtkWidget *widget,
GdkEventMotion *event,
gpointer data);
static gboolean on_map_leave (GtkWidget *widget,
GdkEventCrossing *event,
gpointer data);
static gboolean on_map_visibility_changed (GtkWidget *w,
GdkEventVisibility *event,
gpointer data);
static gboolean on_map_button_pressed (GtkWidget *w,
GdkEvent *button_event,
gpointer data);
static icaltimezone * get_zone_from_point (ETimezoneDialog *etd,
EMapPoint *point);
static void set_map_timezone (ETimezoneDialog *etd,
icaltimezone *zone);
static void on_combo_changed (GtkComboBox *combo,
ETimezoneDialog *etd);
static void timezone_combo_get_active_text (GtkComboBox *combo,
gchar **zone_name);
static gboolean timezone_combo_set_active_text (GtkComboBox *combo,
const gchar *zone_name);
static void map_destroy_cb (gpointer data,
GObject *where_object_was);
G_DEFINE_TYPE (ETimezoneDialog, e_timezone_dialog, G_TYPE_OBJECT)
/* Class initialization function for the event editor */
static void
e_timezone_dialog_class_init (ETimezoneDialogClass *class)
{
GObjectClass *object_class;
g_type_class_add_private (class, sizeof (ETimezoneDialogPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->dispose = e_timezone_dialog_dispose;
}
/* Object initialization function for the event editor */
static void
e_timezone_dialog_init (ETimezoneDialog *etd)
{
etd->priv = E_TIMEZONE_DIALOG_GET_PRIVATE (etd);
}
/* Dispose handler for the event editor */
static void
e_timezone_dialog_dispose (GObject *object)
{
ETimezoneDialogPrivate *priv;
priv = E_TIMEZONE_DIALOG_GET_PRIVATE (object);
/* Destroy the actual dialog. */
if (priv->app != NULL) {
gtk_widget_destroy (priv->app);
priv->app = NULL;
}
if (priv->timeout_id) {
g_source_remove (priv->timeout_id);
priv->timeout_id = 0;
}
if (priv->builder) {
g_object_unref (priv->builder);
priv->builder = NULL;
}
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (e_timezone_dialog_parent_class)->dispose (object);
}
static void
e_timezone_dialog_add_timezones (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
icalarray *zones;
GtkComboBox *combo;
GList *l, *list_items = NULL;
GtkListStore *list_store;
GtkTreeIter iter;
GtkCellRenderer *cell;
GtkCssProvider *css_provider;
GtkStyleContext *style_context;
GHashTable *index;
const gchar *css;
gint i;
GError *error = NULL;
priv = etd->priv;
/* Get the array of builtin timezones. */
zones = icaltimezone_get_builtin_timezones ();
for (i = 0; i < zones->num_elements; i++) {
icaltimezone *zone;
gchar *location;
zone = icalarray_element_at (zones, i);
location = _(icaltimezone_get_location (zone));
e_map_add_point (
priv->map, location,
icaltimezone_get_longitude (zone),
icaltimezone_get_latitude (zone),
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
list_items = g_list_prepend (list_items, location);
}
list_items = g_list_sort (list_items, (GCompareFunc) g_utf8_collate);
/* Put the "UTC" entry at the top of the combo's list. */
list_items = g_list_prepend (list_items, _("UTC"));
combo = GTK_COMBO_BOX (priv->timezone_combo);
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start ((GtkCellLayout *) combo, cell, TRUE);
gtk_cell_layout_set_attributes ((GtkCellLayout *) combo, cell, "text", 0, NULL);
list_store = gtk_list_store_new (1, G_TYPE_STRING);
index = g_hash_table_new (g_str_hash, g_str_equal);
for (l = list_items, i = 0; l != NULL; l = l->next, ++i) {
gtk_list_store_append (list_store, &iter);
gtk_list_store_set (list_store, &iter, 0, (gchar *)(l->data), -1);
g_hash_table_insert (index, (gchar *)(l->data), GINT_TO_POINTER (i));
}
g_object_set_data_full (
G_OBJECT (list_store), "index", index,
(GDestroyNotify) g_hash_table_destroy);
gtk_combo_box_set_model (combo, (GtkTreeModel *) list_store);
css_provider = gtk_css_provider_new ();
css = "GtkComboBox { -GtkComboBox-appears-as-list: 1; }";
gtk_css_provider_load_from_data (css_provider, css, -1, &error);
style_context = gtk_widget_get_style_context (priv->timezone_combo);
if (error == NULL) {
gtk_style_context_add_provider (
style_context,
GTK_STYLE_PROVIDER (css_provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
} else {
g_warning ("%s: %s", G_STRFUNC, error->message);
g_clear_error (&error);
}
g_object_unref (css_provider);
g_list_free (list_items);
}
ETimezoneDialog *
e_timezone_dialog_construct (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
GtkWidget *widget;
GtkWidget *map;
g_return_val_if_fail (etd != NULL, NULL);
g_return_val_if_fail (E_IS_TIMEZONE_DIALOG (etd), NULL);
priv = etd->priv;
/* Load the content widgets */
priv->builder = gtk_builder_new ();
e_load_ui_builder_definition (priv->builder, "e-timezone-dialog.ui");
if (!get_widgets (etd)) {
g_message (
"%s(): Could not find all widgets in the XML file!",
G_STRFUNC);
goto error;
}
widget = gtk_dialog_get_content_area (GTK_DIALOG (priv->app));
gtk_container_set_border_width (GTK_CONTAINER (widget), 0);
widget = gtk_dialog_get_action_area (GTK_DIALOG (priv->app));
gtk_container_set_border_width (GTK_CONTAINER (widget), 12);
priv->map = e_map_new ();
map = GTK_WIDGET (priv->map);
g_object_weak_ref (G_OBJECT (map), map_destroy_cb, priv);
gtk_widget_set_events (
map,
gtk_widget_get_events (map) |
GDK_LEAVE_NOTIFY_MASK |
GDK_VISIBILITY_NOTIFY_MASK);
e_timezone_dialog_add_timezones (etd);
gtk_container_add (GTK_CONTAINER (priv->map_window), map);
gtk_widget_show (map);
/* Ensure a reasonable minimum amount of map is visible */
gtk_widget_set_size_request (priv->map_window, 200, 200);
g_signal_connect (
map, "motion-notify-event",
G_CALLBACK (on_map_motion), etd);
g_signal_connect (
map, "leave-notify-event",
G_CALLBACK (on_map_leave), etd);
g_signal_connect (
map, "visibility-notify-event",
G_CALLBACK (on_map_visibility_changed), etd);
g_signal_connect (
map, "button-press-event",
G_CALLBACK (on_map_button_pressed), etd);
g_signal_connect (
priv->timezone_combo, "changed",
G_CALLBACK (on_combo_changed), etd);
return etd;
error:
g_object_unref (etd);
return NULL;
}
#if 0
static gint
get_local_offset (void)
{
time_t now = time (NULL), t_gmt, t_local;
struct tm gmt, local;
gint diff;
gmtime_r (&now, &gmt);
localtime_r (&now, &local);
t_gmt = mktime (&gmt);
t_local = mktime (&local);
diff = t_local - t_gmt;
return diff;
}
#endif
static icaltimezone *
get_local_timezone (void)
{
icaltimezone *zone;
gchar *location;
tzset ();
location = e_cal_system_timezone_get_location ();
if (location)
zone = icaltimezone_get_builtin_timezone (location);
else
zone = icaltimezone_get_utc_timezone ();
g_free (location);
return zone;
}
/* Gets the widgets from the XML file and returns if they are all available.
* For the widgets whose values can be simply set with e-dialog-utils, it does
* that as well.
*/
static gboolean
get_widgets (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
GtkBuilder *builder;
priv = etd->priv;
builder = etd->priv->builder;
priv->app = e_builder_get_widget (builder, "timezone-dialog");
priv->map_window = e_builder_get_widget (builder, "map-window");
priv->timezone_combo = e_builder_get_widget (builder, "timezone-combo");
priv->table = e_builder_get_widget (builder, "timezone-table");
priv->preview_label = e_builder_get_widget (builder, "preview-label");
return (priv->app
&& priv->map_window
&& priv->timezone_combo
&& priv->table
&& priv->preview_label);
}
/**
* e_timezone_dialog_new:
*
* Creates a new event editor dialog.
*
* Return value: A newly-created event editor dialog, or NULL if the event
* editor could not be created.
**/
ETimezoneDialog *
e_timezone_dialog_new (void)
{
ETimezoneDialog *etd;
etd = E_TIMEZONE_DIALOG (g_object_new (E_TYPE_TIMEZONE_DIALOG, NULL));
return e_timezone_dialog_construct (E_TIMEZONE_DIALOG (etd));
}
static void
format_utc_offset (gint utc_offset,
gchar *buffer)
{
const gchar *sign = "+";
gint hours, minutes, seconds;
if (utc_offset < 0) {
utc_offset = -utc_offset;
sign = "-";
}
hours = utc_offset / 3600;
minutes = (utc_offset % 3600) / 60;
seconds = utc_offset % 60;
/* Sanity check. Standard timezone offsets shouldn't be much more
* than 12 hours, and daylight saving shouldn't change it by more
* than a few hours. (The maximum offset is 15 hours 56 minutes
* at present.) */
if (hours < 0 || hours >= 24 || minutes < 0 || minutes >= 60
|| seconds < 0 || seconds >= 60) {
fprintf (
stderr, "Warning: Strange timezone offset: "
"H:%i M:%i S:%i\n", hours, minutes, seconds);
}
if (hours == 0 && minutes == 0 && seconds == 0)
strcpy (buffer, _("UTC"));
else if (seconds == 0)
sprintf (
buffer, "%s %s%02i:%02i",
_("UTC"), sign, hours, minutes);
else
sprintf (
buffer, "%s %s%02i:%02i:%02i",
_("UTC"), sign, hours, minutes, seconds);
}
static gchar *
zone_display_name_with_offset (icaltimezone *zone)
{
const gchar *display_name;
struct tm local;
struct icaltimetype tt;
gint offset;
gchar buffer[100];
time_t now = time (NULL);
gmtime_r ((const time_t *) &now, &local);
tt = tm_to_icaltimetype (&local, TRUE);
offset = icaltimezone_get_utc_offset (zone, &tt, NULL);
format_utc_offset (offset, buffer);
display_name = icaltimezone_get_display_name (zone);
if (icaltimezone_get_builtin_timezone (display_name))
display_name = _(display_name);
return g_strdup_printf ("%s (%s)", display_name, buffer);
}
static const gchar *
zone_display_name (icaltimezone *zone)
{
const gchar *display_name;
display_name = icaltimezone_get_display_name (zone);
if (icaltimezone_get_builtin_timezone (display_name))
display_name = _(display_name);
return display_name;
}
/* This flashes the currently selected timezone in the map. */
static gboolean
on_map_timeout (gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
if (!priv->point_selected)
return TRUE;
if (e_map_point_get_color_rgba (priv->point_selected)
== E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_1_RGBA)
e_map_point_set_color_rgba (
priv->map, priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_2_RGBA);
else
e_map_point_set_color_rgba (
priv->map, priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_SELECTED_1_RGBA);
return TRUE;
}
static gboolean
on_map_motion (GtkWidget *widget,
GdkEventMotion *event,
gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
gdouble longitude, latitude;
icaltimezone *new_zone;
gchar *display = NULL;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
e_map_window_to_world (
priv->map, (gdouble) event->x, (gdouble) event->y,
&longitude, &latitude);
if (priv->point_hover && priv->point_hover != priv->point_selected)
e_map_point_set_color_rgba (
priv->map, priv->point_hover,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_hover = e_map_get_closest_point (
priv->map, longitude,
latitude, TRUE);
if (priv->point_hover != priv->point_selected)
e_map_point_set_color_rgba (
priv->map, priv->point_hover,
E_TIMEZONE_DIALOG_MAP_POINT_HOVER_RGBA);
new_zone = get_zone_from_point (etd, priv->point_hover);
display = zone_display_name_with_offset (new_zone);
gtk_label_set_text (GTK_LABEL (priv->preview_label), display);
g_free (display);
return TRUE;
}
static gboolean
on_map_leave (GtkWidget *widget,
GdkEventCrossing *event,
gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
/* We only want to reset the hover point if this is a normal leave
* event. For some reason we are getting leave events when the
* button is pressed in the map, which causes problems. */
if (event->mode != GDK_CROSSING_NORMAL)
return FALSE;
if (priv->point_hover && priv->point_hover != priv->point_selected)
e_map_point_set_color_rgba (
priv->map, priv->point_hover,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
timezone_combo_set_active_text (
GTK_COMBO_BOX (priv->timezone_combo),
zone_display_name (priv->zone));
gtk_label_set_text (GTK_LABEL (priv->preview_label), "");
priv->point_hover = NULL;
return FALSE;
}
static gboolean
on_map_visibility_changed (GtkWidget *w,
GdkEventVisibility *event,
gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
if (event->state != GDK_VISIBILITY_FULLY_OBSCURED) {
/* Map is visible, at least partly, so make sure we flash the
* selected point. */
if (priv->timeout_id == 0) {
priv->timeout_id = e_named_timeout_add (
100, on_map_timeout, etd);
}
} else {
/* Map is invisible, so don't waste resources on the timeout.*/
if (priv->timeout_id > 0) {
g_source_remove (priv->timeout_id);
priv->timeout_id = 0;
}
}
return FALSE;
}
static gboolean
on_map_button_pressed (GtkWidget *w,
GdkEvent *button_event,
gpointer data)
{
ETimezoneDialog *etd;
ETimezoneDialogPrivate *priv;
guint event_button = 0;
gdouble event_x_win = 0;
gdouble event_y_win = 0;
gdouble longitude, latitude;
etd = E_TIMEZONE_DIALOG (data);
priv = etd->priv;
gdk_event_get_button (button_event, &event_button);
gdk_event_get_coords (button_event, &event_x_win, &event_y_win);
e_map_window_to_world (
priv->map, event_x_win, event_y_win, &longitude, &latitude);
if (event_button != 1) {
e_map_zoom_out (priv->map);
} else {
if (e_map_get_magnification (priv->map) <= 1.0)
e_map_zoom_to_location (
priv->map, longitude, latitude);
if (priv->point_selected)
e_map_point_set_color_rgba (
priv->map,
priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_selected = priv->point_hover;
priv->zone = get_zone_from_point (etd, priv->point_selected);
timezone_combo_set_active_text (
GTK_COMBO_BOX (priv->timezone_combo),
zone_display_name (priv->zone));
}
return TRUE;
}
/* Returns the translated timezone location of the given EMapPoint,
* e.g. "Europe/London". */
static icaltimezone *
get_zone_from_point (ETimezoneDialog *etd,
EMapPoint *point)
{
icalarray *zones;
gdouble longitude, latitude;
gint i;
if (point == NULL)
return NULL;
e_map_point_get_location (point, &longitude, &latitude);
/* Get the array of builtin timezones. */
zones = icaltimezone_get_builtin_timezones ();
for (i = 0; i < zones->num_elements; i++) {
icaltimezone *zone;
gdouble zone_longitude, zone_latitude;
zone = icalarray_element_at (zones, i);
zone_longitude = icaltimezone_get_longitude (zone);
zone_latitude = icaltimezone_get_latitude (zone);
if (zone_longitude - 0.005 <= longitude &&
zone_longitude + 0.005 >= longitude &&
zone_latitude - 0.005 <= latitude &&
zone_latitude + 0.005 >= latitude)
{
return zone;
}
}
g_return_val_if_reached (NULL);
}
/**
* e_timezone_dialog_get_timezone:
* @etd: the timezone dialog
*
* Return value: the currently-selected timezone, or %NULL if no timezone
* is selected.
**/
icaltimezone *
e_timezone_dialog_get_timezone (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
g_return_val_if_fail (E_IS_TIMEZONE_DIALOG (etd), NULL);
priv = etd->priv;
return priv->zone;
}
/**
* e_timezone_dialog_set_timezone:
* @etd: the timezone dialog
* @zone: the timezone
*
* Sets the timezone of @etd to @zone. Updates the display name and
* selected location. The caller must ensure that @zone is not freed
* before @etd is destroyed.
**/
void
e_timezone_dialog_set_timezone (ETimezoneDialog *etd,
icaltimezone *zone)
{
ETimezoneDialogPrivate *priv;
gchar *display = NULL;
g_return_if_fail (E_IS_TIMEZONE_DIALOG (etd));
if (!zone)
zone = get_local_timezone ();
if (zone)
display = zone_display_name_with_offset (zone);
priv = etd->priv;
priv->zone = zone;
gtk_label_set_text (
GTK_LABEL (priv->preview_label),
zone ? display : "");
timezone_combo_set_active_text (
GTK_COMBO_BOX (priv->timezone_combo),
zone ? zone_display_name (zone) : "");
set_map_timezone (etd, zone);
g_free (display);
}
GtkWidget *
e_timezone_dialog_get_toplevel (ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
g_return_val_if_fail (etd != NULL, NULL);
g_return_val_if_fail (E_IS_TIMEZONE_DIALOG (etd), NULL);
priv = etd->priv;
return priv->app;
}
static void
set_map_timezone (ETimezoneDialog *etd,
icaltimezone *zone)
{
ETimezoneDialogPrivate *priv;
EMapPoint *point;
gdouble zone_longitude, zone_latitude;
priv = etd->priv;
if (zone) {
zone_longitude = icaltimezone_get_longitude (zone);
zone_latitude = icaltimezone_get_latitude (zone);
point = e_map_get_closest_point (
priv->map,
zone_longitude,
zone_latitude,
FALSE);
} else
point = NULL;
if (priv->point_selected)
e_map_point_set_color_rgba (
priv->map, priv->point_selected,
E_TIMEZONE_DIALOG_MAP_POINT_NORMAL_RGBA);
priv->point_selected = point;
}
static void
on_combo_changed (GtkComboBox *combo_box,
ETimezoneDialog *etd)
{
ETimezoneDialogPrivate *priv;
gchar *new_zone_name;
icalarray *zones;
icaltimezone *map_zone = NULL;
gchar *location;
gint i;
priv = etd->priv;
timezone_combo_get_active_text (
GTK_COMBO_BOX (priv->timezone_combo), &new_zone_name);
if (!new_zone_name || !*new_zone_name)
priv->zone = NULL;
else if (!g_utf8_collate (new_zone_name, _("UTC")))
priv->zone = icaltimezone_get_utc_timezone ();
else {
priv->zone = NULL;
zones = icaltimezone_get_builtin_timezones ();
for (i = 0; i < zones->num_elements; i++) {
map_zone = icalarray_element_at (zones, i);
location = _(icaltimezone_get_location (map_zone));
if (!g_utf8_collate (new_zone_name, location)) {
priv->zone = map_zone;
break;
}
}
}
set_map_timezone (etd, map_zone);
g_free (new_zone_name);
}
static void
timezone_combo_get_active_text (GtkComboBox *combo,
gchar **zone_name)
{
GtkTreeModel *list_store;
GtkTreeIter iter;
list_store = gtk_combo_box_get_model (combo);
/* Get the active iter in the list */
if (gtk_combo_box_get_active_iter (combo, &iter))
gtk_tree_model_get (list_store, &iter, 0, zone_name, -1);
else
*zone_name = NULL;
}
static gboolean
timezone_combo_set_active_text (GtkComboBox *combo,
const gchar *zone_name)
{
GtkTreeModel *list_store;
GHashTable *index;
gpointer id = NULL;
list_store = gtk_combo_box_get_model (combo);
index = (GHashTable *) g_object_get_data (G_OBJECT (list_store), "index");
if (zone_name && *zone_name)
id = g_hash_table_lookup (index, zone_name);
gtk_combo_box_set_active (combo, GPOINTER_TO_INT (id));
return (id != NULL);
}
static void
map_destroy_cb (gpointer data,
GObject *where_object_was)
{
ETimezoneDialogPrivate *priv = data;
if (priv->timeout_id) {
g_source_remove (priv->timeout_id);
priv->timeout_id = 0;
}
return;
}
